Carbureter.



J. PETERSON.

GARBURETER.

APPLICATION FILED JUNE 30, 1909.

Patnted July 12, 1910.

iol

f TED STATES PA JOHN PETERSON,

COPARTNEESHIP.

GABBURETER;

Speeiication of Letters Patent. Application ileil June 30, 1909. SerialNo.

YPatented July 12, 1919. 505,174.

To all whom it may concern:

Be it known that LJOHN PETERSON, a d

citizen of the United States, residing at Chicago, county of Cook, andState of Illinois, have invented certain new and useful Improvements inCarbureters, of which the following is a specification.

My invention relates to carbureters employed in connection with gasoleneor hydrocarbon engines to effect the production of an explosive mixtureof air and gasolene vapor for introduction to the engine cylinder.

The object of myY invention is to provide a device ofthe charactermentioned adapted to edect the proper mixture of air and gasolene vaporat all speeds of the engine with which it is connected.

A further object is to provide a carbureter as mentioned which will bedurable and of great efficiency, and further which will be comparativelysimple of construction hence of low cost to manufacture.

Other objects will appear hereinafter.

But these objects in view ofAmy invention consist in a carburetercharacterized as above mentioned and in certain details of constructionand arrangements of parts all as will be hereinafter Vfully describedand particularly pointed out in the claims.

y invention will be more readily under-v stood by reference to theaccompanying drawing-which forms a part of this specification,tlie'figure shown therein illustrating a central vertical section of a.carbureter employing the preferred form of my invention.'

Referrin now to the draw' 1 indicates the prefera ly cylindricallyformed body of my device provided with the detachable upper and lowerheads 2 and 3 respectively preferably threaded in the upper and lowerextremities thereof. Traversing the inte! rior of said'body arepartitions or division'- walls 4 and 5 dividing said body interior into3 independent chambers or com artinents, an upper gasolene' or fuelreceiving chamber 6, an intermediateV chamber 7 and a lower outletchamber 8 which, when the carbureter is in use, communicates, through anozzle 9 threaded for the recep-Y tion of a conduit, with the operatingengine. Formed in the chamber 6 is a-nozzle 10 preferably threaded toaccommodate an oil or fuel supply pipe. Establishing communicationbetween chambers 6 and. 7 is a uct extending V'through an enlargement 12formed integrally with the partition 4. In order to effectthegoverningor, regulation of the flow of the fuel through said duct. Iprovide a needle valve 13, the stem 14 thereof extending through a. boss15 formed upon the cover or upper head 2 and being preferably Y threadedtherein. Threaded upon the upper extremity of said boss is af cap nut 16inclosing a, bushing 17 and a packing 18 provided for obvious reasons.Extending through the peripheral walls of the chamber 7 is a series ofperforations 7 which, when the device is in operation, serve in thecapacity of air inlets- Threaded into the lower head 3 is a sleeve 19iixed, preferably by a key 20, to the lower exteriorly projectingextremity of which is a thumb nut 21 by means of which the positionin ofsaid sleeve in said heady may be rea ily regulated. A lock nut 22threaded upon said sleeve adapted to abut the outer surface of said head3, is adapted to lock said sleeve in adjusted position. Reciprocallymounted in said'sleeve is a stem 23 carrying at this upper extremity acheck valve 24 adapted to seat in a beveled valve port 25 formed in thepartition 5. A Aneedle valve 26 formed upon and upwardly projectingVfrom the valve 24 is adapted, when the latter is seated, to close thelower extremity of the duct 11. A compression 0coil spring 27 interposedbetween the u nder side of the valve 24 and the upper flanged extremity28 of the sleeve 19 is adapted to normally hold the valves 24 and 26 inseated position.

Pivotally mounted in a slot 29 formed in an ear 30 dependin from thehead 3 is a lever 31 the enlarged extremity32 of which is disposeddirectly in the path of vibration or reciprocation of the stem 23, saidlever being adapted to be adjusted by means of an actuating lever 33 toregulate the extent of vibration or reciprocation of the said .valvestem and hence the extent of depression of the valves 24 and 26.'V Theslot 29 is so formed that the lever 31 may not at any time entirelycheck vibration or reciprocation of the stem 23 hence the supply to theen 'ne maI not at any time be entirely shut oligilenoug vibration ofsaid stem being permitted, when said lever is at the extremity of itsretarding or checking movement, to

permit of the passage of enough gas through the carbureter to keep theengine running, such provision being of obvious advantage.

Having their inner extremities rigidly secured, preferably threaded, inan enlargement formed in the valve head 26 for their accommodation, theouter extremities thereof extending through vertically extendingelongated narrow slots 34 formed in the outer wall of the chamber 7, areoppositely extending substantially horizontally disposed rods 35 theouter end portions 36 of which are bent upwardly to a verticallyextending posit-ion as shown. Slidable upon, the same snugly fitting theouter surface of the circumferential wall of the chamber 7 is a ring 37of a width preferably slightly greater than the diameter of theairinlets 7 Formed upon and outwardly projecting from said ring areperforated ears 38, the same bein so positioned as to loosely engage theen portions-'36 of the rods 35. Threaded upon said rodV end portions arenuts 39 adapted to engage said ears 38 and by means of which the rino*37 may evidently be adjusted to any desired` positionthereon. With suchprovision it is clear the member 37 may be adjusted to automaticallyregulate the air intake'to the chamber 7 ,that is, said member may beadjusted upon the rods 35 to open or close the air inlets 7', asdesired, with reference to the valves 24 and 26.

In the operation, of the device, the valve 13 being in open position topermit of the passage of vaporous gasolene or fuel through the duct 12,uponthe suction stroke of the engine piston, the check valve 24 andhence the valve 26 will, because of a partial vacuum being formed in thechamber 8, be lowered to openin position, the Ysame obviously carryingtherewith in.n their downward movement, the member 37 which, in itsdownward actuation uncovers the air inlets 7. In such event gasolenevapor will be admitted to the cha1nber`7 where it will be mixed with aproper percentage of air as regulated by the ring 37, such mixturepassing through the valve port 25 to chamber 8 and thence to .the enginecylinder. Upon the return stroke of the engine piston, in which event'the suction or pullupon the check valve is removed, the latter and hencethe valve 26 will be returned to closing positionl by means of thespring27 thereby shuttin off passa e'of fuel through the device an the supp yof explosive mixture to the engine and simultaneous with such closing ofsaid valves will be the returning to initial or closing position of theair intake regulator 37. `Hence it is evident that with suchconstruction the greater the suction createdin'the chamber 8 the greaterwillbe the extent of opening of said valves and to a greater extent theuncovering of the air intake ports, in other words the supply will beautomatically regulated to satisfy the demand for it. By means of thesleeve 19 the tension of the spring 27 may be adjusted so as to exertany desired .force orl pressure upon the valve 24.

While I have shown, what I deem to be the preferable form of mycarbureter I do not wish to be limited thereto as there might be manychanges made in the details of construction and the 'arrangement ofparts without departlng from the spirit of my invention Vcom rehendedwithin the scope of the ,appende' claims.

Having described my invention what l claim as new and desire to secureby Letters Patent is;

1. Ina carbureter, the combination of a mixing chamber, means foradmitting fuel thereto, regulatable means for admitting air to saidmixing chamber, a suction operated valve governing the outlet from saidmixing chamber, and connections between said valve and said airadmission means whereby actuation lof said valve automatically actuatessaid air admission means, substantially as described.

2. In a carbureter,- the combination of a mixing chamber, means foradmitting fuel thereto, regulatable means for admitting air to saidmixing chamber, a suctionoperated valve governin mixing chamber, anadjustable connections between said valve and said air admission meanswhereby actuation of said valve automatically actuates said airadmission means, substantially as described.

3. In a carbureter, the combination of a mixing chamber, means foradmitting fuel thereto, regulatable means for admitting air to saidmixing chamber, a suction operated valve governing the outlet from saidmixing chamber, connections between said valve and said admission lmeanswhereby actuation of said valve automatically actuates said airadmission means, substantially as described.

4. In a carbureter, the combination of a chamber, means for admittingfuel thereto, regulatable means for admitting air to said mixingchamber, a suction operated valve governin the outlet from said mix inchamber, a justable connections between sa1d valve andsaid vairadmission means whereby actuation of said'svalve automatically actuatessaid air. admission means,

substantially as described.

the outlet from said eeasoa tablishing communication between said mixingand outlet chambers, a needle valve threaded into the end -wall of saidbody forregulating the liow of fuel through said duct, air inlets formedin the vperipheral wall of said mixing chamber, a sleeve threaded inthelower end of said body, a stem 'reciprocally mounted in said sleevecarryin a check valve adapted to seat in said Va ve port, a ringslidable upon said body adapted to cover said air inlets, an adjustableoperative connection between said rin and said'stem, and a second valvecarrie vby said stem adapted to close the lower extremity of said'fuelduct, a coil spring interposed between said check valve and the upperextremity of said sleeve adapted to normally seat said last namedvalves, and adjustable means operatively connected` with the lowerextremity of said bodyv adapted to limit the reciprocatory movement ofsaid valve stem, substantially as described.

, 6. In a carbureter, the combination of a body having partitionsdividing the interior thereof into an upper fuel receiving chamber, anintermediate mixing chamber, and a1 lower outletfchamber, there being aduct establishing communication between said fuel and said mixingchambers and a valve port establishing connection between sald Amixingand outlet chambers, a needle valveadaptedto control the iow of fuelthrough said duct, air inlets formed in the peripheral wall of said'mixing chamber, a stem carrying a check valve adapted to seat in saidport, a needle valve carried by said stem adapted to close the lowerextremity of said fuel duct, a ring slidable upon said body adapted tocover said air inlets, an adjustable operative connection bet-Ween ysaidring and said stem, said connection comprising arms secured to andoutwardly projecting from said stem through slots provided in saidperipheral wall and means adjustably securmg said ring to said arms,spring means adaptedl to normally seat said check valve and said lastnamed needle valve, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN PETERSON.

Witnesses:

JOSHUA R. H. Porra, y HELEN F. LILLrs.

